DS3/E3/STS-1 to Fiber
Converter Modules
Order toll-free in the U.S.: 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
CUSTOMER
SUPPORT
INFORMATION
April 2006
LME020A - LME021A
LME022A - LME023A
LME024A - LME025A
LME026A - LMC5185C
LMC5186C - LMC5187C
LMC5199C
© Copyright 2006. Black Box Corporation. All rights reserved
1000 Park Drive * Lawrence, PA. 35055-1018 * 724-746-5500 * Fax 724-746-0746
Document Number 50-80301BB-00 A0 May 2006
Notes:Notes:
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Table of Contents
About the DS3/E3/STS-1 to Fiber Converter Modules . . . .1
About the LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installing the DS3/E3/STS-1 to Fiber Converter Modules .2
Configuring the DS3/E3/STS-1 to Fiber Converter Modules .3
Loopback Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Black Box Customer Service . . . . . . . . . . . . . . . . . . . . . . . .8
Fiber Optic Cleaning Guidelines . . . . . . . . . . . . . . . . . . . . .8
Electrostatic Discharge Precautions . . . . . . . . . . . . . . . . . . .9
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Federal Communications Commission
Radio Frequency Interference Statement . . . . . . . . . . . . . . .10
European Directive 2002/96/EC (WEEE) requires that any
equipment that bears this symbol on product or packaging
must not be disposed of with unsorted municipal waste. This
symbol indicates that the equipment should be disposed of
separately from regular household waste. It is the consumer's
responsibility to dispose of this and all equipment so marked
through designated collection facilities appointed by government or local authorities. Following these steps through proper disposal and recycling will help prevent potential negative
consequences to the environment and human health. For
more detailed information about proper disposal, please contact local authorities, waste disposal services, or the point of
purchase for this equipment.
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About the DS3/E3/STS-1 to Fiber Converter Modules
The DS3/ES/STS-1 to Fiber Converter Module is an SNMP-manageable module converting thin coax signals to single or multi-mode fiber signals at a data rate
of 45 Mbps (DS3), 34 Mbps (E3) or 52 Mbps (STS-1). Each DS3/ES/STS-1
Module, BNC/FX, includes one pair of BNC connectors and one pair of ST or SC
fiber optic connectors.
Also available for single-strand fiber, the DS3/ES/STS-1 Module, BNC/SSFX,
includes one pair of BNC connectors and SC fiber optic connector, allowing two
wavelengths to share one fiber strand — Full-Duplex data travels on different
wavelengths (1310 nm and 1550 nm) — and doubling the capacity of installed
fiber.
The part numbers are:
LME020A BNC/FX-MM1300-ST, 2km
LME021A BNC/FX-MM1300-SC, 2km
LME022A BNC/FX-SM1310/PLUS-ST, 40km
LME023A BNC/FX-SM1310/PLUS-SC, 40km
LME024A BNC/FX-SM1310/LONG-ST, 80km
LME025A BNC/FX-SM1310/LONG-SC, 80km
LME026A BNC/FX-SM1550/LONG-ST, 100km
Single Strand Products:
LMC5185C BNC/SSF-SM1550/PLUS-SC (1550xmt/1310rcv), 40km
LMC5186C BNC/SSF-SM1310/PLUS-SC (1310xmt/1550rcv), 40km
LMC5187C BNC/SSF-SM1550-SC ( 1550xmt/1310rcv), 20km
LMC5199C BNC/SSF-SM1310-SC (1310xmt/1550rcv), 20km
Federal Communication Commission Radio
Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a
Class B computing device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which the user will be required to correct the interference at his own expense.
Any changes or modifications not expressly approved by the manufacturer
could void the user's authority to operate the equipment.
The use of non-shielded I/O cables may not guarantee compliance with FCC
RFI limits. This digital apparatus does not exceed the Class B limits for radio
noise emission from digital apparatus set out in the Radio Interference
Regulation of the Canadian Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de classe B prescrites dans
le Règlement sur le brouillage radioélectrique publié par le ministère des
Communications du Canada.
NOTE
In order to function correctly, there must be a DS3/ES/STS-1 to Fiber Converter
Module at BOTH ends of the conversion. The data transmitted on the fiber
ports can only be received and interpreted by the receive fiber of another
DS3/ES/STS-1 to Fiber Converter Module.
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2
About the LED Indicators
The DS3/ES/STS-1 to Fiber Converter Module features several diagnostic LEDs
per port. The LED functions are as follows:
Coax (BNC) Port LEDs
LPBK Glows green when module is in a Loopback mode.
NO LNK Glows green when a link is NOT established.
PBEO When Transmit Data Source is set to Pseudo-random Bit
Sequence, this LED glows yellow when receiving a
Pseudorandom Bit Sequence with errors. The LED stays off
when receiving a Pseudorandom Bit Sequence without errors.
When Transmit Data Source is set to any other configuration
besides Pseudorandom Bit Sequence, this LED remains off.
Fiber Optic Port LEDs
FA Glows green when FiberAlert is enabled.
RM Glows green on the remote unit when Remote Management
is enabled. Glows green on the local unit when it has discovered a manageable remote unit.
NO LNK Glows green when a link is NOT established.
SYM Glows yellow when an FX symbol error has occurred.
Installing the DS3/E3/STS-1 to Fiber Converter
Modules
The DS3/ES/STS-1 to Fiber Converter Module may be installed in any 1-Slot
Desktop Chassis and rackmount High Density Chassis Series from Black Box, and
requires one slot. To install a module, remove any blank brackets covering the slots
where the module is to be installed. Slide the module into the chassis, via the card
guides, until the module is seated securely in the connector. Secure the module to
the chassis by tightening the captive screw. Save any “blanks” removed during
installation for future use should configuration requirements change.
INSTALLATION TROUBLESHOOTING
To test the DS3/ES/STS-1 to Fiber Converter Module during installation, first
test the connections with all troubleshooting features disabled, then enable these
features, if desired, just before final installation. This will reduce the features’
interference with testing.
Testing should be performed in an unmanaged environment.
Electrostatic Discharge Precautions
Electrostatic discharge (ESD) can damage to add-in modules. Always observe
the following precautions when installing or handling an add-in module or any
board assembly.
1) Do not remove unit from its protective packaging until ready to install it.
2) Wear an ESD wrist grounding strap before handling any module or component. If without a wrist strap, maintain grounded contact with the system unit throughout any procedure requiring ESD protection.
3) Hold boards by the edges only; do not touch the electronic components or
gold connectors.
4) After removal, always place the boards on a grounded, static free surface,
ESD pad or in a proper ESD bag. Do not slide the board over any surface.
Warranty
Contact Black Box for Warranty information.
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8
When working with units whose features cannot be disabled, both BNC and
fiber cables must be connected before the link LEDs will light.
To test a DS3/ES/STS-1 to Fiber Converter Module by itself, first verify that an
appropriate fiber patch cable is being used. Then, follow these steps:
Step 1: Connect the media converter to the twisted pair device
with a twisted pair cable.
Step 2: Loop a single strand of fiber from the transmit port to
the receive port of your media converter.
Step 3: Verify that both twisted pair and fiber link LEDs light
on the DS3/ES/STS-1 to Fiber Converter Module.
Use the appropriate twisted pair cable, and have the crossover/pass-through
switch set correctly.
Contact Black Box for more information.
Configuring the
DS3/E3/STS-1 to Fiber Converter Modules
There are two ways to configure the DS3/ES/STS-1 to Fiber Converter Module,
which can help improve the performance and reliability for your requirements.
The two methods, described in this section, are managed and unmanaged.
Managed Configuration
To manage the DS3/ES/STS-1 to Fiber Converter Module, an SNMPagent must
be present in the chassis. Manually configure any module features which are not
configurable via management software prior to installating the module. After completing the necessary pre-installation settings, install the DS3/ES/STS-1 to Fiber
Converter Module, and configure additional features via the software.
The features configurable via management software include: Loop Back
Selection, FiberAlert, Transmit Data Source, Jitter Attenuation, Line Build Out.
Within iView², these settings are configured in the Module Detail section of the
main viewing screen, under the picture of the module. For help with iView² software and SNMP management, view the iView² help files.
Unmanaged Configuration
Before installing, configure an unmanaged DS3/ES/STS-1 to Fiber Converter
Module for its hardware selectable features via the DIP switch located at position
S1 (S2 is factory configured — DO NOT CHANGE) on the PCB (shown on the
following page).
Black Box Customer Service
Order toll-free in the U.S.: Call 877-877-BBOX
(outside U.S. call 724-746-5500)
FREE technical support, 24 hours a day, 7 days a week
Call: 724-746-5500 or Fax: 724-746-0746
Mail order: Black Box Corporation
1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com
E-mail: info@blackbox.com
Fiber Optic Cleaning Guidelines
Fiber optic equipment is extremely susceptible to contamination by particles of
dirt or dust which can obstruct the optics and cause performance degradation.
Good system performance requires clean optics and connector ferrules.
1) Only use fiber patch cords (or connectors) from a reputable supplier; lowquality components can cause many hard-to-diagnose problems.
2) Black Box installs dust caps to ensure factory-clean optical devices. These
protective caps should not be removed until the moment of connecting the
fiber cable to the device. Assure that the fiber is properly terminated, polished and free of any dust or dirt and that the location is as free from dust and
dirt as possible.
3) Store spare caps in a dust-free environment such as a sealed plastic bag or
box so reinstalled caps do not introduce any contamination to the optics.
4) Reinstall the protective caps when disconnecting the fiber device.
5) To clean contaminated optics, alternate between blasting with clean, dry,
compressed air and flushing with methanol to remove particles of dirt.
WARNING
Integrated circuits and fiber optic components are extremely susceptible to
electrostatic discharge damage. Only qualified service technicians using tools
and techniques comforming to accepted industry practices should handle these
components.
NOTE
Management software will override any hardware settings (e.g.,
jumper, switch, etc.).
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4
Testing with Pseudorandom Bit Sequence (PRBS)
To test using Pseudorandom Bit Sequence, configure the DS3/ES/STS-1 to
Fiber Converter Module for No Loopback, then configure the Transmit Data
Source to Transmit Pseudorandom Bit Sequence. Configure the local device for
loopback, conduct the test, and verify that errors were not received.
Specifications
Dimensions
4.19”H x 0.78”W x 2.75”D (106.4mm x 19.81mm x 69.85mm)
Environmental
Operating Temperature: 32° - 122° F (0° - 50° C)
Storage Temperature: 0° - 160° F (-20° - 70° C)
Humidity: 5 - 95% (non-condensing)
Power Consumption (Typical) : 550 mA
To ensure that the DS3/ES/STS-1 to Fiber Converter Module functions proper-
ly, change any settings prior to installation.
Switch Settings for the DS3/E3/STS-1 to Fiber Converter Module
FUNCTION SWITCH SETTINGS RESULT [(D) = Default]
Loopback*
S1-1: OFF Disabled (D)
Loopback Type*
S1-2: ON Fiber
S1-2: OFF Coax (D)
Jitter Attenuation*
S1-3: ON Jitter Attenuator on XMT Side (D)
S1-3: OFF Jitter Attenuator on RCV Side
FiberAlert*
S1-4: OFF FiberAlert Disabled (D)
Line BuildOut*
S1-5: ON > 255 ft. (D)
S1-5: OFF 0 to 255 ft.
Transmit Data Source*
S1-6: ON 7: ON Standard Data (D)
S1-6: OFF 7: ON Transmit Unframed (All Ones)
S1-6: ON 7: OFF Transmit Alternating (Ones & Zeros)
S1-6: OFF 7: OFF Transmit Pseudorandom Bit Sequence
DS3/E3/STS-1 Selection
S1-8: ON 9: OFF DS3 Selected (D)
S1-8: OFF 9: ON E3 Selected
S1-8: ON 9: ON STS-1 Selected
Remote Management
S1-10: OFF Remote Management Disabled (D)
* Configurable via SNMP
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DS3, E3 and STS-1 Selection
This feature selects the data rate at which the module will operate, either DS3,
E3 or STS-1. The default is DS3 mode.
Remote Management
This mode allows for the configuration of a remote unit, facilitating easy testing
of the line integrity of the remote unit’s copper port. As the DS3/ES/STS-1 to Fiber
Converter Module is always deployed in pairs, if remote management is desired,
the Remote Management feature must be enabled on the REMOTE unit only.
When Remote Management is enabled, all SNMP-configurable features for both
units can be configured by the local unit.
With Remote Management feature enabled, the remote unit’s chassis must have
SNMP-management disabled.
Loopback Testing
The DS3/ES/STS-1 to Fiber Converter Module includes two loopback test
modes: coax loopback and fiber loopback. Each loopback test simply redirects the
incoming signal back out to the origin. The following illustrations show the path
that a signal takes in each of the loopback test modes.
Loopback testing aids in troubleshooting problems with network connections.
“Looping" received data back onto the transmit path helps determine whether a
connection is still valid. Remote loopback tests isolate problems on the coax run
between a Converter Module and the connected device, while local loopback tests
isolate problems on the fiber connected to the device.
The following four illustrations show a typical progression of loopback tests
(i.e. starting by checking the copper segments at the local side, then the copper segment at the remote side, etc).
Loopback
Lookback is a diagnostic tool that enables the user to test the integrity of the line
by allowing the data to be looped back. The loopback setting can be either Fiber
Loopback or Coax Loopback. Refer to the section on Loopback Testing for more
information
Jitter Attenuator
The user selects Jitter Attenuation on the coax transmit or receive side. This
decreases jitter in the data stream which increases data reliability. The jitter attenuator is always enabled.
FiberAlert
FiberAlert is a troubleshooting feature that minimizes the problems associated
with the loss of one strand of fiber. If a strand is unavailable, the DS3/ES/STS-1
to Fiber Converter Module notes the lost link and will stop transmitting data and
the link signal until a signal or link pulse is received. The result is that the link LED
on BOTH sides of the fiber connection will go out indicating a fault somewhere in
the fiber loop. Using FiberAlert, a local site administrator is notified of a fault and
can quickly determine the location of a cable fault.
Enable FiberAlert on the remote side of the conversion. Using FiberAlert, a local
site administrator is notified of a fault and can quickly determine where a cable
fault is located.
Transmit LIU Waveshape (Line Buildout)
This controls the waveshape being transmitted, helping correct problems related to cabling (i.e. cross-talk, electromagnetic inter-ference, etc.). Improperly set-
ting this switch will cause signal degradation.
Transmit Data Source
This diagnostic tool sends specific patterns of data on the coax port to determine
problems along the cable. The user can set the module to send either a PRBS
(pseudorandom bit sequence), an alternating ones and zeros (TAOZ) or an
unframed all ones (TUA1) code, depending on diagnostic needs. The default is
with both switches in the ON position (standard data).
NOTE
Without understanding LinkLoss and FiberAlert, the DS3/ES/STS-1 to Fiber
Converter Module could appear flawed or even malfunctioning.
NOTE
FiberAlert is not available/applicable on single-strand fiber versions of the
DS3/ES/STS-1 to Fiber Converter Module.
NOTE
FiberAlert should only be enabled on one side of a media conversion. Enabling it on both sides would turn both transmitters off.
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